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Combined Sewer Overflow (CSO) Phase I and Field's Point Tunnel Pump Station
Providence, RI

The Narragansett Bay Commission is responsible for the wastewater collection systems and two major wastewater treatment facilities that serve the greater Providence metropolitan region.  Since 1993, NBC has been involved in a major Combined Sewer Overflow (CSO) improvement program.  Pare's involvement in the design of these improvements dates to 1994.   Construction of the $390 million Phase 1 program--six miles of underground storage tunnels and a pump station--began in 2001 and was completed in 2008.  The Field's Point Tunnel Pump Station (FPTPS) was designed to pump-out the tunnels following storm events, so that the combined wastewater/stormwater can be treated at the Field's Point Wastewater Treatment Plant.

As part of the Design Team, Pare provided civil, mechanical, and structural engineering services associated with the FPTPS Facility.  During preliminary design, Pare assisted in the preparation of the 30% design documents, evaluated the pump hydraulics, and prepared general alternatives for system hydraulics and space layout.  After approval of the preliminary design, Pare prepared final design drawings and specifications which included final grading, site runoff and storm drainage design, site access and pavement requirements, routing of 24” discharge lines from the FPTPS Control Building through the yard and into to the 42” force main, 42-inch force main layout and design, utility layout around the facility, and sanitary sewer discharge design.